These are Magic: The Gathering Vampire Tokens. I created these as a prize for a MTG tournament we held at a child's birthday party, and now they're available to the public!
These are printed in black or red plastic, but they take paint very well if you'd like to make them more realistic at home.
You can download the 3D model and print it yourself, too! Just hop over to Zheng3.com to find this model and links to others like it.